Dengue worldwide overview
Situation update, May 2024
Since the beginning of 2024, over 7.5 million dengue cases and over 3 000 dengue-related deaths have been reported from 73 countries/territories.
In mainland Europe, imported cases from endemic areas have been reported in 2024 but no autochthonous cases have been reported so far.
Most cases globally have been reported from the WHO PAHO region, with Brazil reporting most cases (over 6 million, WHO/PAHO Situation Report for week 27, 2024).
Three-month dengue virus disease case notification rate per 100 000 population, February-April 2024
Detailed overview
The French outermost regions Guadeloupe and Martinique continue facing an epidemic classified as in phase 4 and level 1, but a decreasing trend in cases has been reported the past month (mid-April to mid-May). In Saint-Martin, dengue circulation continues, but at lower levels with sporadic cases reported. (Bulletin de surveillance de la dengue - point épidémiologique régional du 16 mai 2024.pdf (guadeloupe.gouv.fr)) .
In French Guyana, cases have been decreasing during the past weeks, after a peak in January 2024 (25/04/2024 Epi update).
Overall, 910 cases of dengue have been reported in La Réunion until 12 May 2024, according to the EpidemiologicalBulletin published on 18 May 2024. Dengue circulation is at higher levels compared to 2023 and case numbers have been showing an increasing trend since the beginning of 2024.
Dengue circulation has also been reported in the WHO SEARO Region and WPRO Region as well as in Africa in April 2024.
On 30 May 2024, WHO published a Disease Outbreak News Item on the Global Situation on dengue circulation, highlighting the increases in cases that have been observed this year and presenting also a new dashboard with a global overview of surveillance data on dengue cases.
ECDC assessment
Chikungunya virus disease and dengue affect people in most countries of the tropics and sub-tropics. EU/EEA citizens travelling to and living in the affected areas should apply personal protective measures against mosquito bites.
The likelihood of onward transmission of dengue and chikungunya virus in mainland EU/EEA is linked to importation of the virus by viraemic travellers into receptive areas with established and active competent vectors (e.g. Aedes albopictus and Aedes aegypti). Aedes albopictus is established in a large part of Europe. In Europe and neighbouring areas, Aedes aegypti is established in Cyprus, on the eastern shores of the Black Sea, and in the outermost region of Madeira.
The current likelihood of the occurrence of local transmission events of chikungunya and dengue viruses in areas where the vectors are present in mainland EU/EEA is low, as the environmental conditions are not yet favourable for vector activity and virus replication in vectors. In 2023, locally-acquired dengue cases were reported by France, Italy, and Spain.
All autochthonous outbreaks of CHIKVD and dengue in mainland EU/EEA have so far occurred between June and November.
N.B: The data presented in this report originates from both official public health authorities and nonofficial sources, such as news media. Data completeness depends on the availability of reports from surveillance systems and their accuracy, which varies between countries. All data should be interpreted with caution and comparisons, particularly across countries, avoided, due to underreporting, variations in surveillance system structure, varying case definitions between countries and over time, and use of syndromic definitions.
Map
Countries/territories reporting dengue cases since March 2023, and as of April 2024
Since the beginning of 2024, over 7.5 million dengue cases and over 3 000 dengue-related deaths have been reported from 73 countries/territories. Most cases globally have been reported from the WHO PAHO region, with Brazil reporting most cases.
